Irregular Expressions

Feb 15 2010   10:28PM GMT

Verifying System Integrity

Dan O'Connor Dan O'Connor Profile: Dan O'Connor

The team at has an BETA version of hash checking application.

I tired a few files from a FreeBSD machine I have, but it was not able to locate a match.  I am sure there would have been more success if files from a Windows based system had been tried.

This will be an excellent tool to verify the integrity of files on systems, more then once I have been in a situation where I needed to validate the integrity of a file with out a know good sample available.

If the status of a machine is in question I would not even collect the has off the system while it is running, booting into a liveCD like Knoppix ( ) or my favorite FreeBSD ( ) is the best way to ensure the integrity of the hash.

On freebsd you can use the md5 or sha1 command.

> md5 /lib/
MD5 (/lib/ = e16f4e5c137bd7f445b32733f45ac268

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